Arthur o



A. 0. DADY. IGNITION MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JULY 27,1917.

1 329,654. Patented Feb. 3, 1920.

2 SHEETSSHEET 1- III] witnesses 1721960230?" Tz/zw 00ml;

A. 0. DADY.

MECHANISM FOR INTERNAL COMBUSTIONENGINES.

APPLICATION FILED JULY 21, my. .7

IGNITION W Jwsw: Evan X307" wwm %@V% (A Patented Feb. 3, 1920.

2 SHEETSSHEET 2.

To all whom it may concern UNITED sr EsPATEN LO E ARTHUR o. DADY, on NEW YORK, N. n, ASSIGNOR T0 rrnns'rrnnt COMPANY, mc.',cor

NORTH CHICAGO, ILLINOIS, .A CORPORATION OF. NEW YORK,

IGNITION MECHANISM-FOR INTERNAL-COMBUSTION rnwernns."

Be it known that I, ARTHUR O.- DADY, a citizen of the UnitedStates, residing at New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Ignition Mechanism for InternaLCombustion Engines, of which the following'is a'full, clear, concise, and exact description, reference being had to the accompanying drawings, forming, a part of this specification. 1 i

My invention relates to ignition mechanism for internal combustion engines, and w more particularly to ignition mechanism which includes a battery, a vibrator, ar-

ranged to cooperate with the battery circuit,

anda magneto, together with circuit connections whereby either the magneto or the battery togetherwith the vibrator may be employed for generating the current necessary for ignition in the engine cylinders.

The primary purpose of a system of this kind, which includes two sources'of current,

is to provide some means for generating an efficient spark at low engine speeds or at starting of the engine. It has been the practice to provide suitable switching mechanism in connection with the ignition circuit whereby it is possible to control theignition circuit to utilize the battery upon starting of the engine or at low running speeds thereof, and to cut out the battery and utilize the magneto at higher engine speeds.

The system of my invention incorporates the use of a timer which serves to determine the point in the engine cycle at which sparking occurs. When. the battery is furnishing the current necessary for 1gn1t1on,for,: n

other words, when the engine is running at low speed the timer is set to its retarded position so that sparking occurs at the proper point of the engine'cycle and when the mag neto is employed and the engine is running at high speed the timer is set to its advanced position. s c

It isvone of the objects of the present invention to provide an improved arrangement of mechanism for simultaneously controlling the ignition circuit and for controlling the advance and retard'of the timer so that when the battery circuit is included in the ignition system the timer will automatically assume its retarded position and when Specification of Letters Patent.

vention the internal combustion engine.

Patented Ru z-2,1920.

Application filed July 27, 1917. SerialNo. 183,042.

the battery circuit is cut out of the ignition system and the magneto current utilizedto furnish ignition the timer will automatically assume its advanced position.

In my co-pending application, Serial No. 183,043, filed July 27 1917 ,I have disclosed mechanism for simultaneously controlling the ignition circuit and timer which includes,

connections being provided between the switching device and the timer so that both may be operated in unison.

These and otherob ects of the present invention will be. pointed out more fully in connection with the accompanying drawings wherein,

Figure 1 is a diagrammatic circuit draw- 1ng showing the ignition system'of my 1n- Fig. 2 is a view showing the mechanism of my invention as it appears when in use;

Fig. 3. is an enlarged detail cross sectional view of the switching mechanism of my invention; and

Fig. 4 is an enlarged detail cross sectional view of the lower end of the switching rod shown in Fig. 3.

Similar characters of reference refer to similar parts throughout the several views.

Referring first to Fig. 2, I have shown at 5. a'portion of an automobile located at a point convenient to the operator, such, for example, as the instrument board, through which extends a'switch ,6 which is provided with an operating handle 7. The back of the board carries a vibrator 8 provided with binding posts shown at 9 and 10. The binding post 9 is connected through the conductor 11 with a battery 12, the other side of which is connected through the conductor'13 with-ground. The binding post 10 of the Y vibrator is connected through conductor 14:

with binding post :15of the switch 6. The

' magneto is shown-at 16 provided with a dis- ,tributer 17, the contacts of which terminate in the binding posts'1818 arranged to be connected with the several spark plugs of The interrupter is shown at 19 provided with a lever :i a 2 1 "t m-Q n c d t r0 gh the W r j Y with t eij n i thsfig wi l e-describe ,presently. The timer carries the terminal 2 2'oonnectedthrbugh thejconductor 28 with r the terminal24jniountedfQfithejsWitch"6.'

'As most cl arly illustrated in Fig; 1', the

magneto comprises the. horseshoeagnagnets 25, thepole pieces 26 and 27, a rotor 28 and a pair er; induction coils 29 "and "30 mounted 1n inductive relationv around .the

rotorgfll e Winding 29 constitutes the .pri- :niary grinding and? the winding 130 the sec- .ondary Winding. V The; secondary ,Winding is. connected:throughi-the conductor '31 'Wi'th L ;33 33,"Which are eoni lected With the spark iplugs one after another. 'ii'Tl'lGLBIlCl "of the secondary windingtopposite the brush Lois eonneotednto conductonfi l in turn con- ,inected withthe,ablock"35 -mounted .onrthe c timer. .or intermpter 'otfith'emagneto PThe block. 351is "carried by and"insulatedirom 1S la sleeve 42 carrying the twowcams .shoWn th'e plate;.36:-to; which.is also 'pivotally attached atzi-fifiiiian' inte rupter lever 38 car-ry- V7 ingfapontact;39flarranged to cooperate-With the'z contact 40 m'ounted-ori the gblo ck o;

The interrupter ley'er'z38 grounded,- as Mounted around "thefinterrupter lever :38

"at &3 and' H. The sleeve 42 is rigidly con v -nected ,with the lever arm 20. Gne en'd of grounded at 45.

the primary Winding 29 is connected With the conductor. 34c and its opposite .cnd

From the construction thus; far pointed fout-f the operation'ot the :magneto. may be ldscribed. "zfhezplate connected with the rotor 28 so as to rotate therewith and i "the brush 32 also connected; with theirotor 'itili'Ollgh-Lthfi .gear ng shown 1n" dotted lines,

whereby the brush servesto provide the V rnecessaryelectricalconnections to the several spark plugs. Upon rotation ofthe v rotor-tend urest in'thedirection indicated by the arrowxthe contacts 39 'andx lO will be .open'ediand"iclosedalternately, dueto the engagement o'f-j the lever 88? with the two earns 43 andt i i, therembeing suitable spring Timechanisrfi employed{for holding the lever .norrna'llyiiin a position :where its contact j 39 engages the contact 40. WV'h en the-lever 38 assumes a; rpositionnbetween the cams 43 and 'acircuit is provided "from; the ipri smary winding 29through;conductor 84, con- -tact 40', 3 contact 39, and interrupter lever. ,fgs jtoi ground 241 back tothe grounded side s ot thelprirnarywindingp Asfthe rotor and plate 136 continue to rotate 'th'e interrupter ilever 38 engages one of the I. cams with "the yresult'that the contacts:39; andf lO are opened so as to interrupt the flOW of current through the :primaryovinding. "The sudden collapse of -the current-in the primary windingresults ,..the,1requirecl spark. T

i eghig'h inductive cufientin -theseco d a r en Bio prod v bindingypost7 22-is;a springflcontacti'l ar'- 1 ranged to restagainst the "block 35; "The p ost 22 is;,. c0nnected through the conduc tor i8 Withlthe conductor segment*"49-'of the .switchhmemberfi. The switch member also comprises the'tWo stationary conductor seg- *ments 50 and 51--=andthermovablesconductor s 52. fss fhesegment; .51 is (connected? to? a-eplate p 7 53 ofitheFVibratorf8 tlrrough the eonductor a brush, 32 arrangedxto engage vthe contacts 14:. This iplate -iS preferably' mountedvonf an iron corev54s carrying EtaWHIdIIIg 55;. one

'GllCl CO IlfiBCtQ'Cluwiilhit bitiitely i "through conductor; 1'1 and thegothenend con- ;nectedwith an armature 56- proi ided with a contact-57 arranged to cotiperatewith a ioontact 58 carried "by the pla'te's53'i "1A conden- 1 conductor segments 'g49-.-.and a50fand 49 and 51."'The segment 50 grounded:i at'v60. The movable segment 52 .is connected iby 'S Witch' member is-mova'ble in awlongitudinali' -V H direction and is arrangedg-to connectithe f means; of a- Wire touth'e timer or: interrupter arm 20 sof th'at; movement ofthe segment 52 will cause movement-:1ofnthe;arm 20" :Wherebythe advance or retard D'fi'the timer 20 Willbe described in detail -hereinatfiter. lkssuniing that the engine is to "be started, or is running atlow engine speedg the nsinber 52-is'moved to the left (Fig; 1) 'S0'Ytl12tt rat Bat -w'vhereby it connects ithei segments 1:00" i i may be controlled byt'heswitch, 'Thez'wire conneetionzbetween the :member 52 anew-m it assumes the position shown in dotted lines '49 and 5 1. The battery is-vtheninacondition to supply the currentfOr ignition anduthe circuitisas follows ii-om battery lg2 th=rcugh 1 'condu'ctor 11, through vibratoreto: segment 31 1 t 35, through contacts 39 and: 40 to aground at 41 and-back to battery. iAsthe rotor-sand interrupter are irotated $116 ICOIItabtSKSQ -QITidL- I are separated with the result thati the -servesto induce alcurrent in? the seeondary t V Winding sufficient to-provide =efficientkwigni- -'t-ion". zWhen the 1 segment 52 is Y moved to the V position-just referred to-rthe' leveri20{is v oved downward-lyfsoathat theiftiiner is-re-;. j

*tarded' w 7 e V IWhen the segment .52. takes :athe p-posit'l-on mag? thei-battery-zeircuit is out nut ofithe ate and furnish thecurrent necessary for ignition. W hen it is desired to stop the motor the segment 52' is moved to the o position Qff whereby it connects the segment 49 with the segment 50 and thusto ground. The primary winding is then permanently grounded and is rendered inoperative.

The detail construction of the switch member 6 and the connection between the switch and the timer are most clearly illustrated in Figs. 3 and a. The switch member 6 comprises a metallic sleeve member 61 provided with the flanges 62 and63 to facilitate connection of the sleeve to the instrument board of an automobile. Mounted concentric with the sleeve 61, and attached thereto in any suitable manner, is a sleeve 64: made up of insulating material. The outer end of the sleeve 64: is attached to a metallic cou pling 50 which forms also a conductor segment. The coupling 50 is attached to the metallic tubing 65 which serves to cover and guide the wire 21 attached to the timer lever 20. Mounted for rectilinear movement within the sleeves 61' and 6a is a rod 66 carrying at its outer end a finger piece 7. The inner end of the rod 66 carries the conductor segment 52 which is insulated from the rod by the insulating washers, as 'most clearly shown in Fig. 4. The end of the rod is also provided with an aperture 68 which serves to provide means whereby the wire 21may be attached to the rod. The conductor segment 49 is embedded in the insulator sleeve 64, as is the conductor segment 51; The rod 66 is provided with a shoulder at 69 arranged to engage a washer 70 held in place by a coiled compression spring 71 interposed between it and the sleeve 6d. The arrangement of the spring mechanism just referred to is such that the rod 66 may be moved longitudinally within the sleeves without in any way compressing the spring 71 unless the rod is moved to a position whereby the segment 52 contacts with'the segment 50, whereupon the spring 71 is compressed and the rodreturned to-the position shown in Fig. 3 as soon as the finger piece 7 is released.

Having thus described my invention, what I claim as new and desire to secure" by Letters Patent of the United States is:

1. In anignition system for internal com- 'bustion engines the provision of a distributer, a timer, two separate sources of current, one for use at high engine speeds and the other for low engine speeds, a switch and circuit connections for rendering either one of said sources operable in the ignition system, said switch comprising a tubular casing having conductor and insulator segments disposed along its length, a switch member longitudinally movable in the casing for electrically connecting the conductor segments, and linkage connecting the switch member and the timer, whereby the latter is advanced and retarded upon operation of the switch.

2. In an ignition system for internal combustion engines, the provision of a distributer, a timer, two separate sources of current,

one for use at high engine speeds and the other for low engine speeds, a switch and circuit connections for rendering either one of said sources operable in the ignition systems, said switch comprising a tubular casing having conductor and insulator seg' ments disposed along its length, one of the conductor segments being arranged at one end of the casing for the purpose of short circuiting ,one of the sources of current around the interrupter, a switch member longitudinally movable inthe casing for electrically connecting the conductor segments, a spring interposed between the casing and the switch member arranged nor mally to prevent electrical connection between the switch member and the said shortcircuiting conductor segment, and linkage connecting the switch member and the timer, whereby the latter is advanced and retarded upon operation of the switch.

In witness whereof, I hereunto subscribe my name this 23 dayo'f July, A. I). 1917.

' ARTHUR O. DADY.

Witnesses ALEX. Lonsrnnv, IDA KESSLER. 

